Having finally arrived at the meeting place, Koyomi and Suruga find an unexpected person waiting for them. Before their reunion can take place, they must face an unexpected foe!

After Oshino leaves the city, Mayoi informs Koyomi about a sand box whose shape resembles a devil and he decides to find out why.

After Koyomi helps Kanbaru tidying her room, he has a bath in her house, and finds out a curious story about the water of the tub.